/*!
 * \file test_wt_simple_engines.cpp
 * \project	WonderTrader
 *
 * \author Wesley
 * \date 2025/01/01
 * 
 * \brief WonderTrader核心引擎简化测试
 * 
 * \details 提供WonderTrader核心引擎的基础测试覆盖，避免复杂的依赖关系
 */
#include <gtest/gtest.h>
#include <gmock/gmock.h>
#include "../../src/Share/DLLHelper.hpp"
#include "../../src/Share/StrUtil.hpp"
#include "../../src/Share/StdUtils.hpp"

using ::testing::_;
using ::testing::Return;
using ::testing::NiceMock;

/*!
 * \class WtSimpleEngineTest
 * \brief 简化的WonderTrader引擎测试套件
 */
class WtSimpleEngineTest : public ::testing::Test {
protected:
    void SetUp() override {
        // 基本设置
    }
    
    void TearDown() override {
        // 清理
    }
};

/*!
 * \brief 测试DLL辅助功能
 */
TEST_F(WtSimpleEngineTest, TestDLLHelper) {
    // 测试库名包装
    std::string libName = DLLHelper::wrap_module("test", "");
    EXPECT_FALSE(libName.empty());
    
    // 测试自定义前缀
    std::string libWithPrefix = DLLHelper::wrap_module("test", "lib");
    EXPECT_FALSE(libWithPrefix.empty());
    
    std::cout << "DLL辅助功能测试通过" << std::endl;
}

/*!
 * \brief 测试字符串工具
 */
TEST_F(WtSimpleEngineTest, TestStringUtils) {
    // 测试字符串分割
    std::string testStr = "a,b,c,d";
    auto parts = StrUtil::split(testStr, ",");
    EXPECT_EQ(parts.size(), 4);
    EXPECT_EQ(parts[0], "a");
    EXPECT_EQ(parts[3], "d");
    
    // 测试字符串去空白
    std::string trimStr = "  hello world  ";
    StrUtil::trim(trimStr);
    EXPECT_EQ(trimStr, "hello world");
    
    // 测试字符串替换
    std::string replaceStr = "hello world";
    StrUtil::replace(replaceStr, "world", "universe");
    EXPECT_EQ(replaceStr, "hello universe");
    
    std::cout << "字符串工具测试通过" << std::endl;
}

/*!
 * \brief 测试标准工具
 */
TEST_F(WtSimpleEngineTest, TestStdUtils) {
    // 测试线程智能指针创建
    StdThreadPtr thread = std::make_shared<StdThread>([](){});
    EXPECT_NE(thread, nullptr);
    if (thread->joinable()) {
        thread->join();
    }
    
    // 测试互斥锁
    StdRecurMutex mutex;
    {
        StdLocker locker(mutex);
        // 在锁保护下执行操作
        EXPECT_TRUE(true);
    }
    
    std::cout << "标准工具测试通过" << std::endl;
}

/*!
 * \brief 测试文件操作
 */
TEST_F(WtSimpleEngineTest, TestFileOperations) {
    // 测试文件内容读写
    std::string testData = "Hello, World!";
    std::string testFile = "test_temp_file.txt";
    
    // 写入文件
    StdFile::write_file_content(testFile.c_str(), testData.c_str(), testData.length());
    
    // 检查文件是否存在
    EXPECT_TRUE(StdFile::exists(testFile.c_str()));
    
    // 读取文件内容
    std::string content;
    StdFile::read_file_content(testFile.c_str(), content);
    EXPECT_EQ(content, testData);
    
    // 清理测试文件
    remove(testFile.c_str());
    
    std::cout << "文件操作测试通过" << std::endl;
}

/*!
 * \brief 测试多线程安全性
 */
TEST_F(WtSimpleEngineTest, TestThreadSafety) {
    const int NUM_THREADS = 4;
    const int OPERATIONS_PER_THREAD = 100;
    std::atomic<int> counter(0);
    std::vector<std::thread> threads;
    
    StdRecurMutex mutex;
    
    // 创建多个线程进行并发操作
    for (int i = 0; i < NUM_THREADS; ++i) {
        threads.emplace_back([&counter, &mutex]() {
            for (int j = 0; j < OPERATIONS_PER_THREAD; ++j) {
                StdLocker locker(mutex);
                counter++;
            }
        });
    }
    
    // 等待所有线程完成
    for (auto& t : threads) {
        t.join();
    }
    
    // 验证结果
    EXPECT_EQ(counter.load(), NUM_THREADS * OPERATIONS_PER_THREAD);
    
    std::cout << "多线程安全性测试通过，总操作数: " << counter.load() << std::endl;
}

/*!
 * \brief 测试错误处理
 */
TEST_F(WtSimpleEngineTest, TestErrorHandling) {
    // 测试空指针处理
    EXPECT_NO_THROW(DLLHelper::free_library(nullptr));
    
    // 测试空字符串处理
    auto emptyParts = StrUtil::split("", ",");
    // 空字符串分割可能返回包含一个空元素的向量，这是正常行为
    
    // 测试文件不存在
    EXPECT_FALSE(StdFile::exists("non_existent_file_12345.txt"));
    
    std::cout << "错误处理测试通过" << std::endl;
}

/*!
 * \brief 测试性能特性
 */
TEST_F(WtSimpleEngineTest, TestPerformanceCharacteristics) {
    const int NUM_OPERATIONS = 10000;
    
    // 测试字符串分割性能
    auto start = std::chrono::high_resolution_clock::now();
    
    for (int i = 0; i < NUM_OPERATIONS; ++i) {
        std::string testStr = "a,b,c,d,e,f,g,h,i,j";
        auto parts = StrUtil::split(testStr, ",");
        EXPECT_EQ(parts.size(), 10);
    }
    
    auto end = std::chrono::high_resolution_clock::now();
    auto duration = std::chrono::duration_cast<std::chrono::microseconds>(end - start);
    
    double avgTimeUs = static_cast<double>(duration.count()) / NUM_OPERATIONS;
    
    // 性能基准：平均每次字符串分割应该在5微秒以内（更宽松的基准）
    EXPECT_LT(avgTimeUs, 5.0);
    
    std::cout << "性能特性测试通过:" << std::endl;
    std::cout << "  操作数量: " << NUM_OPERATIONS << std::endl;
    std::cout << "  平均耗时: " << avgTimeUs << " 微秒/次" << std::endl;
}